# Create Number Sequence with different start **URL:** \ **Category:** Lists-Logic\ **Created:** [April 30, 2018, 2:47pm UTC](https://forum.dynamobim.com/t/create-number-sequence-with-different-start/21501 "2018-04-30T14:47:54Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Martin\_Romby](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/martin_romby/32/10818_2.png) [@Martin\_Romby](https://forum.dynamobim.com/u/Martin_Romby)\ **Post date:** [April 30, 2018, 2:47pm UTC](https://forum.dynamobim.com/t/create-number-sequence-with-different-start/21501/1 "2018-04-30T14:47:55Z")
Hi’ all, I’m trying to create a number sequence which would have different start based on the list length in a list. The number sequence should start with 100, 200 or 300 based on the length of the sublists in the count list. ![SequenceWithDifferentStart](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/8/9/895ef6dd89799f67c267e652e32a1e91bdcbbf8b.jpg) So in this case what I’m trying to do is [0] List .[0,0] List …[0,0,0] 100 … …[0,0,9] 109 .[0,1] List …[0,1,0] 200 … …[0,1,28] 228 [1] List .[1,0] List …[1,0,0] 100 … …[1,0,4] 104 … I know it’s a matter of lacing by I havn’t been able to crack it yet. Thanks. /Martin ---
**Author:** ![Daniel\_Hurtubise](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/daniel_hurtubise/32/146534_2.png) [@Daniel\_Hurtubise](https://forum.dynamobim.com/u/Daniel_Hurtubise)\ **Post date:** [April 30, 2018, 2:59pm UTC](https://forum.dynamobim.com/t/create-number-sequence-with-different-start/21501/2 "2018-04-30T14:59:08Z")
How’s that ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/a/7/a7f940221334407002604db382b32f915f96fbd9.png) //If the value is smaller or equal to 10 use 100 x\<= 10? 100: //Then if the value is smaller or equal to 200 use 200 if not then use 300 x\<= 200 ? 200 : 300; ---
**Author:** ![Nick\_Boyts](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/nick_boyts/32/76313_2.png) [@Nick\_Boyts](https://forum.dynamobim.com/u/Nick_Boyts)\ **Post date:** [April 30, 2018, 4:51pm UTC](https://forum.dynamobim.com/t/create-number-sequence-with-different-start/21501/3 "2018-04-30T16:51:17Z")
@Daniel_Hurtubise’s method is likely the solution you’re looking for. But we need additional information to know what conditions you’re looking at. ---
**Author:** ![Martin\_Romby](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/martin_romby/32/10818_2.png) [@Martin\_Romby](https://forum.dynamobim.com/u/Martin_Romby)\ **Post date:** [May 1, 2018, 7:03am UTC](https://forum.dynamobim.com/t/create-number-sequence-with-different-start/21501/5 "2018-05-01T07:03:04Z")
Hi @Daniel_Hurtubise, @Nick_Boyts and @erfajo Sorry I wasn’t being clear enough about the solution I was trying to achieve. I came up with a very simple solution yesterday, where I just used List.OfRepeatedItem to make the list lengths match and then it’s working. ![Solution](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/0/d/0db64362990d5eff58aac7769ba5855eecc9b150.png) See attached .dyn. @erfajo Yes, long time no see. The solution is for identifying CCS types. [CCS.ElementType.dyn](https://forum.dynamobim.com/uploads/short-url/tRdtEwKqEFGHsVh3DYM5aCmbpq5.dyn) (20.3 KB) ---
**Author:** ![Vikram\_Subbaiah](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/vikram_subbaiah/32/50797_2.png) [@Vikram\_Subbaiah](https://forum.dynamobim.com/u/Vikram_Subbaiah)\ **Post date:** [May 1, 2018, 7:06am UTC](https://forum.dynamobim.com/t/create-number-sequence-with-different-start/21501/6 "2018-05-01T07:06:29Z")
@Martin_Romby Was your original post trying to do something like this?.. ![sequence](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/3/b/3bfffb0cdb0755d55b874feb1f3713d50871f357.png) ---
**Author:** ![Martin\_Romby](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/martin_romby/32/10818_2.png) [@Martin\_Romby](https://forum.dynamobim.com/u/Martin_Romby)\ **Post date:** [May 1, 2018, 7:14am UTC](https://forum.dynamobim.com/t/create-number-sequence-with-different-start/21501/7 "2018-05-01T07:14:38Z")
Yes @Vikram_Subbaiah. That was exactly what I was after. 👌 Thank you! I have to learn more about code blocks and design script. ---
**Author:** ![Karthik\_Ramalingam](https://avatars.discourse-cdn.com/v4/letter/k/edb3f5/32.png) [@Karthik\_Ramalingam](https://forum.dynamobim.com/u/Karthik_Ramalingam)\ **Post date:** [May 20, 2018, 11:33am UTC](https://forum.dynamobim.com/t/create-number-sequence-with-different-start/21501/9 "2018-05-20T11:33:09Z")
Hi Team, I am looking solution for this below requirement mentioned in this link. [https://forum.dynamobim.com/t/hvac-duct-line-number-tag-numbering-in-the-sequence/22056](https://forum.dynamobim.com/t/hvac-duct-line-number-tag-numbering-in-the-sequence/22056) Thanks and Regards, KARTHIK.R ---
**Author:** ![Karthik\_Ramalingam](https://avatars.discourse-cdn.com/v4/letter/k/edb3f5/32.png) [@Karthik\_Ramalingam](https://forum.dynamobim.com/u/Karthik_Ramalingam)\ **Post date:** [May 20, 2018, 11:34am UTC](https://forum.dynamobim.com/t/create-number-sequence-with-different-start/21501/10 "2018-05-20T11:34:47Z")
> [@HVAC - Duct Line number tag numbering in the sequence](https://forum.dynamobim.com/t/hvac-duct-line-number-tag-numbering-in-the-sequence/22056): > > Hi Team, I am currently working on a Revit project. Where I got the requirement regarding there is a sequence line number tag need to be assigned for the Duct system based on the below format. I am trying to automate this sequence using the dynamo script. But I couldn’t able to succeed in that. Kindly check the attached image. And help me to create the dynamo script as per the below requirement. For eg., 2S345 - 2 stands for second floor, S stands for Supply system type and 345 is the sequence… please help me out in the above requirement.